Jack Quaid’s action-comedy “Novocaine” topped a painfully slow weekend at the box office with $8.7 million. For theater owners, however, there’s not too much to celebrate: It’s one of the worst debuts to still capture the No.

Being a good guy isn't always painless but it is pretty fun for Jack Quaid, who gets a star vehicle with his new action comedy "Novocaine."

Quaid's leading role in Novocaine feels like a natural continuation of these genre-bent everymen. He plays Nathan Caine, a mild-mannered assistant bank manager who has congenital insensitivity to pain with anhidrosis (CIPA), a genetic disorder that impacts his nervous system to the point that he can't feel pain or temperature.